231335506044 has 72 divisors (see below), whose sum is σ = 593157382272. Its totient is φ = 76005689760.

The previous prime is 231335506019. The next prime is 231335506067. The reversal of 231335506044 is 440605533132.

231335506044 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 3 + 550 + 60 + 44 = 666.

It is a super-2 number, since 2×231335506044² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12062407 + ... + 12081569.

It is an arithmetic number, because the mean of its divisors is an integer number (8238296976).

Almost surely, 2^231335506044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231335506044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296578691136).

231335506044 is an abundant number, since it is smaller than the sum of its proper divisors (361821876228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231335506044 is a wasteful number, since it uses less digits than its factorization.

231335506044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23967 (or 23962 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 231335506044 in words is "two hundred thirty-one billion, three hundred thirty-five million, five hundred six thousand, forty-four".